Chainsaw



FIG. 1 is a perspective view of a chainsaw showing our new design;

FIG. 2 is a front view of the chainsaw of FIG. 1;

FIG. 3 is a rear view of the chainsaw of FIG. 1;

FIG. 4 is a top view of the chainsaw of FIG. 1;

FIG. 5 is a bottom view of the chainsaw of FIG. 1;

FIG. 6 is a left side view of the chainsaw of FIG. 1; and,

FIG. 7 is a right side view of the chainsaw of FIG. 1.

The broken lines of FIGS. 1-7 form no part of the claimed design. 

CLAIM The ornamental design for a chainsaw, as shown and described. 